# Proposed AD FAA-2021-0338: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-23-21
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 10, 2021, 86 FR 24778
- Comments due: June 24, 2021
- Became: [AD 2021-23-21](https://openairdocs.org/ad/2021-23-21)
- Docket: FAA-2021-0338 (https://www.regulations.gov/docket/FAA-2021-0338, where comments are filed)
- Project: AD-2020-01423-T
- FR document: 2021-09345
- Official PDF: https://openairdocs.org/files/sha256/79/a4/79a402354da9a5a5f61f79fbe6a10552c2a6473d8f10d14133c63d3f32c51e7c (from https://www.govinfo.gov/content/pkg/FR-2021-05-10/pdf/2021-09345.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/05/10/2021-09345/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D3541BC9CBD362CE862586D100630929.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0338

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 787-8 and 787-9 airplanes. This proposed AD was prompted by reports that shimming requirements were not met during the assembly of certain structural joints, which can result in reduced fatigue thresholds and cracking of the affected structural joints. This proposed AD would require repetitive inspections for cracking of certain areas of the aft wheel well bulkhead (AWWB) body chord and AWWB side fitting and failsafe straps, and repair of any cracking found. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 10, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-09345, comments due Jun 24, 2021 (https://www.federalregister.gov/documents/2021/05/10/2021-09345/airworthiness-directives-the-boeing-company-airplanes)

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